How to use addNewDeferConstructor method of org.powermock.core.transformers.javassist.support.PowerMockExpressionEditor class

Best Powermock code snippet using org.powermock.core.transformers.javassist.support.PowerMockExpressionEditor.addNewDeferConstructor

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...133 * constructor should be suppressed (which we don't know at this134 * moment of time) the parent class must have a default135 * constructor that we can delegate to.136 */​137 addNewDeferConstructor(clazz);138 final StringBuilder code = new StringBuilder();139 code.append("{Object value =")140 .append(mockGetawayClass.getName())141 .append(".constructorCall($class, $args, $sig);");142 code.append("if (value != ").append(MockGateway.class.getName()).append(".PROCEED){");143 /​*144 * TODO Suppress and lazy inject field (when this feature is ready).145 */​146 if (superclass.getName().equals(Object.class.getName())) {147 code.append(" super();");148 } else {149 code.append(" super((").append(IndicateReloadClass.class.getName()).append(") null);");150 }151 code.append("} else {");152 code.append(" $proceed($$);");153 code.append("}}");154 c.replace(code.toString());155 }156 }157 158 @Override159 public void edit(FieldAccess f) throws CannotCompileException {160 if (f.isReader()) {161 CtClass returnTypeAsCtClass;162 FieldInfo fieldInfo;163 164 try {165 CtField field = f.getField();166 returnTypeAsCtClass = field.getType();167 fieldInfo = field.getFieldInfo2();168 } catch (NotFoundException e) {169 /​*170 * If multiple java agents are active (in INST_REDEFINE mode), the types implicitly loaded by javassist from disk171 * might differ from the types available in memory. Thus, this error might occur.172 *173 * It may also happen if PowerMock is modifying an SPI where the SPI require some classes to be available in the classpath174 * at runtime but they are not! This is valid in some cases such as slf4j.175 */​176 return;177 }178 179 if (isNotSyntheticField(fieldInfo)) {180 String code = "{Object value = " +181 MockGateway.class.getName() +182 ".fieldCall(" +183 "$0,$class,\"" +184 f.getFieldName() +185 "\",$type);" +186 "if(value == " + MockGateway.class.getName() + ".PROCEED) {" +187 " $_ = $proceed($$);" +188 "} else {" +189 " $_ = " + getCorrectReturnValueType(returnTypeAsCtClass) + ";" +190 "}}";191 f.replace(code);192 }193 }194 }195 196 /​**197 * Create a defer constructor in the class which will be called when the198 * constructor is suppressed.199 *200 * @param clazz The class whose super constructor will get a new defer201 * constructor if it doesn't already have one.202 * @throws CannotCompileException If an unexpected compilation error occurs.203 */​204 private void addNewDeferConstructor(final CtClass clazz) throws CannotCompileException {205 final CtClass superClass;206 try {207 superClass = clazz.getSuperclass();208 } catch (NotFoundException e1) {209 throw new IllegalArgumentException("Internal error: Failed to get superclass for " + clazz.getName() + " when about to create a new default constructor.");210 }211 212 ClassPool classPool = clazz.getClassPool();213 /​*214 * To make a unique defer constructor we create a new constructor215 * with one argument (IndicateReloadClass). So we get this class a216 * Javassist class below.217 */​218 final CtClass constructorType;219 try {220 constructorType = classPool.get(IndicateReloadClass.class.getName());221 } catch (NotFoundException e) {222 throw new IllegalArgumentException("Internal error: failed to get the " + IndicateReloadClass.class.getName()223 + " when added defer constructor.");224 }225 clazz.defrost();226 if (superClass.getName().equals(Object.class.getName())) {227 try {228 clazz.addConstructor(CtNewConstructor.make(new CtClass[]{constructorType}, new CtClass[0], "{super();}", clazz));229 } catch (DuplicateMemberException e) {230 /​/​ OK, the constructor has already been added.231 }232 } else {233 addNewDeferConstructor(superClass);234 try {235 clazz.addConstructor(CtNewConstructor.make(new CtClass[]{constructorType}, new CtClass[0], "{super($$);}", clazz));236 } catch (DuplicateMemberException e) {237 /​/​ OK, the constructor has already been added.238 }239 }240 }241 242 243}...

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